The phantom snorer!

Over the last two days the harbour festival has been in full swing not too far from here and is usually attended by several thousand people. It does go on until 10pm when they end the day's events with a big fireworks display which we have seen so many times from my bedroom window, but since the new development has been built across the road we can only hear them now.
Last night it ended as usual and I think a lot of people then move on to the various bars (if they still have capacity) or clubs. Very often I hear them coming home worse for wear and singing, shouting or talking very loud.
However, last night it was fairly quiet because I wasn't woken until 5:30am this morning and then it was because I could hear someone having a really good cough. It sounded as though he had something sticking in his throat but when I looked out of the window I couldn't see where the noise was coming from.
I went to the bathroom and when I got back into bed the coughing has stopped and everything was quiet. I started to drop off and then I heard another unfamiliar noise. It was snoring, very loud snoring! I listened for a moment and got out of bed again and went to Eden's bedroom door and looked in as she was the only other person in the house and I knew it wasn't me! Eden was sleeping quietly so it wasn't her either.
Again I looked out but couldn't see anyone so I got back into bed and tried to go back to sleep. But you know how it is when your mind starts saying 'What if it's someone who's been taken very ill? Should I ring the police? Perhaps I should go downstairs and look out of the front door to see if I can see anyone and then ring the police'. While this was going over and over in my mind the snoring stopped as suddenly as it had started then you get more nagging doubts 'Is he alright? What if he's unconscious! Should I really call the police?'.
Eventually I thought 'Oh what the hell! If someone's got that drunk that he lies down in the street to sleep it off it's his problem and not mine!'.
Then I went back to sleep and the mystery will remain!